Basic Definitions

• The Pluralism Project: Atheism and Non-religious Philosophies
• About.com:Agnosticism/Atheism Basics

Statistics

• Video on Atheism and growth rate, education, and crime
• Comprehensive survey of nonreligious individuals conducted by Center For Inquiry
• Divorce Rates among Freethinkers
• Percentage of population of World and of US
• Percentage of Population by Country
• Wikipedia on Atheist Demographics

Skepticism

• Skeptic Society
• James Randi Educational Foundation
• The Skeptic's Dictionary
• What's the Harm?
• Snopes
• Stop Sylvia Browne
• Jenny McCarthy Body Count

Other Prominant Freethinking Organizations

• American Atheists
• American Humanist Association
• Church of Reality
• Council for Secular Humanism
• Freedom from Religion Foundation
• The Humanist Institute
• The Institute for Humanist Studies
• Internet Infidels
• Military Association of Atheists and Freethinkers
• Rational Response Squad

Recommended Literature

• Origin of Species (links to free version) by Charles Darwin
• The Demon Haunted World: Science as a Candle in the Dark by Carl Sagan and Ann Druyan
• Why People Believe Weird Things: Psuedoscience, Superstitution, and Other Confusions of Our Time by Michael Shermer
• The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe Without Design by Richard Dawkins
• Atheism: The Case Against God by George H. Smith
• Letter to a Christian Nation by Sam Harris
• The Portable Atheist: Essential Readings for the Nonbeliever by Chrisopher Hitchens

YouTube Vidoes

• Foundational Falsehoods of Creationism by AronRa
• Why People Laugh at Creationists by Thunderf00t
• Pale Blue Dot by Carl Sagan and Ann Druyan
• Atheism is poem by Richard Coughlan
• Famous Nonbelievers
• Deist foundations of America
• Sam Harris speaking at the 2007 Aspen Ideas Festival
• Satire of Homeopathy by 'That Mitchell and Webb Look'

Podcasts

• Skepticality
• Point of Inquiry
• The Infidel Guy Show
• Freethought Radio

Also be sure to check out our Affiliates.
If you would have any suggestions for links to be added, email me.